fix(migrate): check if page exists before adding to space

chore: bump wiki to v2.0.0

feat: Wiki On Steroids

- wip: Approval Mechanism
- wip: Migrate from www/
- wip: build.json --> ESbuild
- wip: breadcrumbs on show
- wip: Wiki Sidebar (Converted Web Sidebar to tree)
- wip: Hierarchial Sidebar
- wip: docs search URL taken from the sidebars
- wip: Attachments support in edit mode from portal too
- wip: Rich Text Editor Support with attachment support
- wip: Collapsible headers in sidebar
- wip: Drag and drop support for sidebar in edit mode
- wip: Custom script support in wiki settings
- wip: Cached sidebar context
- wip: Auto table of contents highlighting
- wip: Two way communication between reviewer and patch raiser

Merge pull request #2 from sihaysistema/workspace